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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 8, Iss. 4 — Apr. 1, 2010
  • pp: 392–394

Novel optical fiber current sensor based on magnetic fluid

Tao Hu, Yong Zhao, Xing Li, Jingjing Chen, and Zhiwei Lv  »View Author Affiliations


Chinese Optics Letters, Vol. 8, Issue 4, pp. 392-394 (2010)


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Abstract

A novel fiber optic Fabry-Perot (F-P) current sensor is developed based on magnetic fluid as the medium in F-P interference cavity. A signal demodulation method based on slanted fiber Bragg grating (FBG) wavelength measurement system is proposed. Theory and principle of electromagnetic-controlled refractive index of the magnetic fluid is described, as well as the structure of the sensor system. Preliminary experiments are carried out, and the results indicate that there is a fairly good linearity of the measurement characteristic. The thickness of magnetic fluid film and initial concentration will affect the measurement results.

© 2010 Chinese Optics Letters

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(120.4630) Instrumentation, measurement, and metrology : Optical inspection

Citation
Tao Hu, Yong Zhao, Xing Li, Jingjing Chen, and Zhiwei Lv, "Novel optical fiber current sensor based on magnetic fluid," Chin. Opt. Lett. 8, 392-394 (2010)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-8-4-392


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